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Hello, Searching this forum has enabled me to get pretty far in what I'm trying to do. However, there is one more manipulation I would like to make and I haven't found a solution. Using the data and code below, I generate the plot produced by the last command. If possible I would like to reverse the order of the y-axis (bearing in mind horizontal=T) so that 0 is plotted at the upper most part of the y-axis and 3 at the axis intercepts. I've tried the experiment approach t...

The profile seems to suggest very high latencies on the brick at ovirt1.nwfiber.com:/gluster/brick1/engine ovirt2.* shows decent numbers. Is everything OK with the brick on ovirt1? Are the bricks of engine volume on both these servers identical in terms of their config? -Krutika On Wed, May 30, 2018 at 3:07 PM, Jim Kusznir <jim at palousetech.com> wrote: > Hi: > > Tha...

Hi all again: I'm now subscribed to gluster-users as well, so I should get any replies from that side too. At this point, I am seeing acceptable (although slower than I expect) performance much of the time, with periodic massive spikes in latency (occasionally so bad as to cause ovirt to detect a engine bad health status). Often, if I c...

OK my understanding is that with preallocated disks the performance with and without shard will be the same. In any case, please attach the volume profile[1], so we can see what else is slowing things down. -Krutika [1] - https://gluster.readthedocs.io/en/latest/Administrator%20Guide/Monitoring%20Workload/#running-glusterfs-volume-profile-command On Tue, Sep 5, 2017 at 2:32 PM, Abi Askushi <rightkicktech at gmail.com> wrote: > Hi Krutika, > > I already have a preallocated disk on VM. > Now I am checking perfo...

I've been back at it, and still am unable to get more than one of my physical nodes to come online in ovirt, nor am I able to get more than the two gluster volumes (storage domains) to show online within ovirt. In Storage -> Volumes, they all show offline (many with one brick down, which is correct: I have one server off) However, in Storage -> domains, they all show down (although somehow, I got machines from the data domain to start), and...

Hello everybody! I have 3 gluster servers (*gluster 3.12.6, Centos 7.2*; those are actually virtual machines located on 3 separate physical XenServer7.1 servers) They are all connected via infiniband network. Iperf3 shows around *23 Gbit/s network bandwidth *between each 2 of them. Each server has 3 HDD put into a *stripe*3 th...

On Thu, May 31, 2018 at 3:16 AM, Jim Kusznir <jim at palousetech.com> wrote: > I've been back at it, and still am unable to get more than one of my > physical nodes to come online in ovirt, nor am I able to get more than the > two gluster volumes (storage domains) to show online within ovirt. > > In Storage -&gt...

Guess you went through user lists and tried something like this already http://lists.gluster.org/pipermail/gluster-users/2018-April/033811.html I have a same exact setup and below is as far as it went after months of trail and error. We all have somewhat same setup and same issue with this - you can find same post as yours...

...e kernels too. [mkp: fixed typo] Reported-by: Douglas Miller <dougmill at linux.vnet.ibm.com> Cc: "James E.J. Bottomley" <jejb at linux.vnet.ibm.com> Cc: "Martin K. Petersen" <martin.petersen at oracle.com> Cc: Hannes Reinecke <hare at suse.de> Cc: linux-scsi at vger.kernel.org Cc: stable at vger.kernel.org Signed-off-by: Paolo Bonzini <pbonzini at redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen at oracle.com> Adding Paolo/Kevin to comment. As for the poor gluster performance, could yo...

Hi, Is anybody know the purpose of this method (xen_evtchn_do_upcall)? When I run a user level application involved in TCP receiving and the SoftIRQ for eth0 on the same CPU core, everything is OK. But if I run them on 2 different cores, there will be xen_evtchn_do_upcall() existing (maybe when the local_bh_disable<http://www.cs.fsu.edu/~baker/devices/lxr/http/ident?i=local_bh_dis...

Thanks a lot for your reply! You guessed it right though - mailing lists, various blogs, documentation, videos and even source code at this point. Changing some off the options does make performance slightly better, but nothing particularly groundbreaking. So, if I understand you correctly, no one has yet managed to get acceptable performance (relative to underlying hardware ca...

Hi I'm trying to setup a 3 node gluster, and am hitting huge performance bottlenecks. The 3 servers are connected over 10GB and glusterfs is set to create a 3 node replica. With a single VM performance was poor, but I could have lived with it. I tried to stress it by putting copies of a bunch of VMs on the servers and seeing what h...

Hi Krutika, I already have a preallocated disk on VM. Now I am checking performance with dd on the hypervisors which have the gluster volume configured. I tried also several values of shard-block-size and I keep getting the same low values on write performance. Enabling client-io-threads also did not have any affect. The version of gluster I am using is glusterfs 3.8.12 built on May 11 2017 18:46:20. The setup is a set of 3...

Hello, I was unable to find clues to my problem in ?optim. Using the data and code below, I get an error ("system is exactly singular") when a particular line of code is left in, but have found that 'optim' works when I comment it out. The line of code in question is after the closeAllConnections() line of code and contains a call to "...

[Adding gluster-users back] Nothing amiss with volume info and status. Can you check the agent.log and broker.log - will be under /var/log/ovirt-hosted-engine-ha/ Also the gluster client logs - under /var/log/glusterfs/rhev-data-center-mnt-glusterSD<volume>.log On Wed, May 30, 2018 at 12:08 PM, Jim Ku...

Hello, Using the dataset below I produce a soil.texture plot (R code for this included at the end). One will notice I have plotted the points based on whether or not they are in a region called 'upstream' or 'downstream'. I'm curious if there is a way to somehow extract counts of the nu...

Our users are experiencing some unacceptable delay when trying to have a conversation. The delay is so noticeable that they keep stepping on each others words and resort to calling the customers via cell phone. Here is the setup SDSL Connection (PPPoA) Speedtouch 610 SDSL Modem 3Com 2224PWR Plus Switch...

Hi, So is the KVM or Vmware as the host(s)? I basically have the same setup ie 3 x 1TB "raid1" nodes and VMs, but 1gb networking. I do notice with vmware using NFS disk was pretty slow (40% of a single disk) but this was over 1gb networking which was clearly saturating. Hence I am moving to KVM to use glusterfs hoping for better performance and bonding, it will be interesting to see which host type runs faster. Which operating system is gluster on?...

...data and plot commands follow below. I've been trying to figure out a way to minimize the variable called "min_this" by changing the values in ylim_2 only, with one constraint: ylim_2[1]>0. I'm unsure of how to stuff the code that follows the plot commands into a loop that adjusts ylim_2 so as to minimize "min_this"? I'm guessing there is a function to do this? Thanks, Eric library(zoo) #example data and plotting commands follow temp.dat<-read.table(textConnection("Well Meas_Date WTD ECgw GW_Project_Area Region Avg.EM.Survey.Value Avg.Soil.Paste.EC...

Also, this is the profile output of this Volume: gluster> volume profile mariadb_gluster_volume info cumulative Brick: laeft-dccdb01p.core.epay.us.loc:/export/mariadb_backup/brick ------------------------------------------------------------------- Cumulative Stats: Block Size: 16384b+ 32768b+ 65536b+ No. of Reads:...